Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a5869d7fa98b3414e24e91a7da9320e95fac6fa3930bbdbc57ebec3329ed69a3' 
  AND token = 'cBwlYY0WSEum17rbJ3jacNRf6WTS5N4ieNmorzJmH6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}